package JVM;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @author:谢君臣
 * @Date:2021/4/217:05
 * @version:1.0
 * @function:
 */
public class TestString {
    public static void main(String[] args) {
        ReentrantLock lock = new ReentrantLock(true);
    }
}
